Milt, have you seen this electronic kit on e-bay. Looks pretty compact.
http://bit.ly/K59Rdw
If you don't mind me asking, how much did you pay for your adapter from Gear Vendors. looks like I am going have to "step up to the plate" also.
Right now with 27" tall tires and 3.55's it turning 3100 RPM at 70 MPH (calculated, not actual. I don't trust my speedo to be accurate). With the GV it should be ~2400RPM, much better for highway speeds.
Good to talk to someone that actually has a GV O/D.
Thanks, Dennis